Attention: This product is high precision optic products, things listed below but not limited to will cause unrecoverable problems to products, which will not be covered by warranty.
For example:
1. Expose products outside with surrounding temperature above 50 Celsius degree or below -10 Celsius degree;
2. Soak products in water;
3. Drop rangefinder or do other physical damage to products
4. Dismantle products